Heating apparatus.



No. 794,550. PATBNTBD JULY 11, 1905.

M. RAPP. HEATING APPARATUS.

APPLICATION FILED 0CT,1, 1904.

2 SHEETS-SHEET 1.

PATENTED JULY 1l, 1905.

M. RAPP. HEATING APPARATUS.

APPLICATION FILED ocT.1. 1904.

2 SHEETS-'SHEET 2.

UNTTED STATES Patented. July 11, 1905.

MATHEVV RAPP, OF MORTON, ILLINOIS.

HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 794,550, dated July 11, 1905.

Application filed October 1,1904. Serial No. 226,836.

To a/ZZ whom, t Nanny concern:

Be it known that I, MATHEW RAPP, a citizen of the United States, residing at Morton, in the county of Tazewell and State of Illinois, have invented certain new and useful Improvements in Heating Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention has reference to a heating apparatus, and relates particularly t0 a hotwater heater.

The present invention has for its object to obtain a maximum degree of heat from a minimum amount of fuel; and to this end it consists in the novel construction hereinafter described and claimed whereby the products of combustion are brought into direct contact with water containing compartments arranged in said heater and surrounding the firepot thereof.

The principal objects of my invention are, first, a water'- heater consisting of a coneshaped hopper or fuel-magazine encircled by a water-jacket of substantially the same contour; second, to provide circulating waterchambers in a series of sections, together forming annular manifolds, the inner chambers of which are approximately half the height of the outer chambers and each chamber at its upper end communicating with the waterjacket encircling the hopper aforesaid and the lower inner faces of the inner chambers forming the upper wall of the fire-box; third, to provide an annular water-jacket which supports the water-chambers forming the manifolds and communicating with the same and to semicircular water-jackets which support and communicate with the annular waterjackets and the said manifolds, the said semicircular jackets connected by pipes which serve as grate-bars, the arrangement of the grate-bars, the annular jacket, and the lower wall of the inner chambers forming a fire-pot at the base of the hopper, all of the above devices being incased in an outer casing, preferably cylindrical in form, one of the said semicircular jackets having connected therewith means for feeding water to the same, which is circulated through the annular jacket, the sectional chambers, the jacket encircling the hopper, and from the latter out through suitable pipes connected therewith.

While the essential and characteristic features of my invention are necessarily susceptiblc of modification, the preferred embodiment thereof is illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of a hot-water heater embodying my improvements. Fig. Q is a vertical sectional view through a heater, showing clearly the arrangement of the magazine, the water-jackets, and grate. Fig. 3 is a cross-section in plan of the heater. Fig. 4 is a plan View of the chambered casing, the semicircular jackets supporting the same, and the grate. Fig. 5 is a detached view in elevation showing one of the sectional water-chambers. Fig. 6 is a plan, somewhat reduced, showing the arrangement of the smoke-flue and its outlet to the stack; and Fig. 7 is a detail in section, showing the mode of connecting the sections ofthe outer casing of the heater when the same is made in several sections.

- In the drawings, 1 denotes a base made of suitable material inclosing an ash-pit 2, and 3 is a door to-the ash-pit. r

The base I supports the semicircular casings or jackets 4, provided with water-chambers 5, the said jackets facing each other and connected by a series of hollow water-tubes 6, which form a grate, as shown. Beneath the grate is arranged a shaker consisting of a pair of parallelly-arranged rods 7 to which are attached cranks or short arms 8, which support the serrated bars 9, adapted when the rods 7 are oscillated to move the bars 9 in an arc of a circle and up and between the grate-bars consisting of the tubes 6. The ends of the rods 7 pass out through the base 1 and are connected to a cross-rod 10 by means of the rods 11 and suitable couplings. The rod 10 has attached thereto a shaker arm or lever 12 for the uses and purposes apparent.

18 indicates a flat annular casing having a water-chamber 14, and the said casing is supported by the jacket 4, somewhat in the manner seen in Fig 2, with the inner circular wall of the said casing projecting inwardly from the inner wall of the jackets, the said inner wall of the casing forming the lower wall of 'a fire-box, (indicated as 15.) The chamber 14 of the casing 13 communicates with the chamber 5 of the jackets 4 through corresponding openings 16 in the upper and lower walls of the jackets 4 and casing 13. The upper wall of the casing 13 is shaped to form the annular chambered ring 17 for a purpose to be described.

18denotes an outer casing, preferably cylindrical in form, supported by the base 1 and is adapted to incase the casing 13 and other water-compartments to be described, the same forming the outer wall of the heater. It is preferable to make the casing 18 in several sections and connect the same by means of bolts 19 and thumb-screws 20, the bolts passing through one of the sections from the inside thereof and through a slot 21 in an overlapping portion of the adjoining section, as clearly seen in Fig. 7. By this mode of constructing the outer wall access to the interior of the heater for cleaning or other purposes is made very easy.

Supported by the casing 13 and encircling the outer wall of the ring 17 thereof is a manifold 22, consisting of a series of pairs of segmental or sectional water-chambers 23, preferablyarc-shaped and of suitable height, the pairs of sections having their upper and lowerportions intel-communicating to form the passage-ways 24 between them and by their arrangement in the series forming the passage-ways 25 between each of the pairs of chambers. (See Fig. The casing 13 further supports a second manifold 26,which consists of a series of pairs of segmental or sectional water-chambers 27 preferably arc-shaped and similar to those indicated, as 23, but not quite as tall, (see Fig. 5,) the pairs of sections having their upper and lower portions intercommunicating to form the passage-ways 28 between them and by their arrangement in the series forming the passage-ways 29 between each of the pairs of chambers, the said passageways 29 forming extensions of the passageways 25. (See Fig. 3.) The manifold 26 is supported by the casing 14 within the circle described by the inner wall of the ring 17. and the walls of the manifolds 22 and 26 adjacent to the wall of the ring 17 are offset, as at 30, forming a shoulder to insure the proper seating of the manifolds on the casing 13 and its ring 17. The chambers 23 extend up above the tops of the chambers 27 for convenience in f placing and connecting their upper ends to parts to be described.

The chambers 27 are constructed with the inner tapered walls 31 to form the shelf portions 32, the lower bevel-walls of which form the upper converging wall of the fire-box 15.

The spacing of the manifolds or chambers 23 and 27 upon opposite sides of the ring 17 of the casing 13 provides the annular passageway 33 between them, communicating with the passages 24, 25, 28, and 29, as described.

The lower portions of the chambers 23 and 27 are made secure to the casing 13 by bolts 34 passing through the walls of the chambers 23 and 27 and openings 35 in the walls of the ring 17, there being corresponding openings in the adjacent walls of the chambers for the passage of water from the chamber 14 in the casing 13 to the chambers 23 and 27, as will be described.

35u denotes a depending cone-shaped casing having a water-chamber 36. The said casing extends down into the heater from the top thereof and is disposed within the inner rings formed by the manifolds 22 and 26 with the lower end of the casing supported above the circle described by the shelf portions 32 of the chambers 27. The upper portion of the `casing 35a is turned outwardly to form a horizontal chambered portion, the outer wall of which engages with the casing 18. which incloses the same. The horizontal chambered portion of the upper end of casing 35SL is disposed sornewhat above the upper end of the chambers 23, forming the annular passageway 37, the lower wall of which is the plate 38, supported by the upper ends of the chambers 23. which is open at 39 (see Fig. 6) for the passage of gases arising from the fire and passing through the passages 24, 25, 28, 29, and 33 and entering the passage way 37 through the opening 39 passes out through the stack 40, as will be understood.

The fuel hopper or magazine is indicated as 41, is cone-shaped, and is supported in thev heater within the inner wall of the casing 35, the lower portion thereof open and in line with the lower wall of the casing 35 above the {irebox 15. The upper end of the hopper 41 is removed inwardly from the upper inner wall of the casing 35, forming an air-chamber 42 between the wall of the hopper and the wall of casing 35a. The air-chamber is closed at its lower end by the abutment of the walls of the hopper and casing and closed at its upper end by the covering-plate 43. The hopper has a dome-shaped portion 44 and is further provided with an inclosing cap or covering 45 to permit the placing of fuel within the said hopper.

Referring again to the chambers 23 and 27, their upper ends are provided with portions which abut withL the outer wall of the chamber 36 and are secured thereto by means of bolts 46, which are passed through the engagingwalls of the chamber 36 and the chambers 23 and 27 and the outer walls of the lastmentioned chambers. /Vhere the bolts pass through the engaging walls of the chambers 36, 23, and 27, the same are provided with corresponding openings 47 and provide for .lOO

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the circulation of water' from the chambers 23 and 27 into the chamber 36 of the casing 35a.

The feed or return -pipe to the heater (indicated as 48) entering through the base 1 communicates with the semicircular jackets 4. Water circulates through the jackets 4, the grate 6, up through and around the casing 13, and from the same to the manifolds 22 and 26, from the said manifolds to the casing 35a, and up and out through the leads 49, which communicate with the upper portions of the casing 35a.

To gain entrance to the fire-box 15 of the heater, the said heater is constructed with a set of the chambers 23 and 27 removed, as best seen in Fig. 3 of the drawings, and 50 indicates a door in the casing 18 leading to the fire-box.

Fuel is placed into the hopper'4l as required and automatically deposits itself into the firebox in manner similar to all self-feeders of this type. Water -circulating through the grate, casings, and chambers is brought into direct contact with the surfaces surrounding' the fire and the hot gases and air arising therefrom. Making the chambers of cast or sheet iron, the parts are quickly heated and so retained, producing a heater which consumes a minimum amount of fuel and one thatA is durable and may be manufactured at first cost.

The arrangement of the grate-bars in the manner shown and the disposition of the shaker-bars beneath the said grate-bars and so far removed from the heat of the fire-box insures their long life, for the reason that ashes and bits of burning' coal cannot lodge upon the same.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a hot-water heater, the combination of a casing, an annular water-chamber supported within the casing, a pair of cylindrical manifolds consisting of a series of segmental chambers which are supported by the annular chamber, a cone-shaped water-jacket depending within the manifolds and communicating therewith, and a fuel-magazine supported within the cone-shaped jacket.

2. In a hot-water heater, the combination of acasing, a pair of semicircular water-jackets connected by tubular grate-bars, a series of pairs of intercommunicating water-chambers disposed in cylindrical arrangement supported by the Vaforesaid jackets, a water-jacket depending within the inner circle described by the pairs of chambers aforesaid and commu-4 nicating therewith, and a fuel-magazine depending within the last-mentioned jacket.

3. In a hot-water heater, the combination of a casing made of several sections with overlapping portions detachabl y connected, means for securing the said sections, an annular water-chamber supported within the casing, a

pair of cylindrical manifolds consisting of a series of segmental chambers which are supwith the annular waterchamber, a coneshaped water-jacket depending within the ring formed by the segmental chambers, and a fuel-magazine supported within the coneshaped jacket.

5. 4In a hot-water heater, the combination of a casing, a pair of semicircular water-chambers, a series of tubular grate-bars connecting the said chambers, aflat annular water-jacket su pported by the said semicircular waterchambers, the inner wall of the said annular jacket serving as the lower wall of the fireboX, a series of pairs of segmental chambered sections forming a substantially annular manifold supported by the annular water-jacket, the inner wall of the said sections being beveledand serving as the upper wall of the fireboX, a fuel-magazine depending within the circle described by the manifold, feed-pipes attached to one or the other of the semicircular water-chambers, and outlet-pipes suitably connected with the manifold.

6. In a hot-water heater, the combination of a casing, a fuel-magazine supported within the casing, one or more water-jackets beneath the lower end of the magazine, feed-pipes connected with said jackets, a pair of substantially cylindrical manifolds one encircling the other and both surrounding the said magazine, said manifolds composed of a series of segmental chambered sections, connections between said sections and the said jackets, and outlet-pipes suitably connected with the said sections.

7 In a hot-water heater, the combination of a casing, a flat annular water-chamber its inner wall serving as the lower wall of a lireboX, and its upper wall formed with an annular projected ring` grate-bars suitably supported beneath the chamber and the said firebox, a series of pairs of sections supported by the said chamber and upon opposite sides of its annular projected ring, the same having intercommunicating chambers, a depending cone-shaped water-jacket communicating with the aforesaid sections, means for securing the sections at their upper ends to the cone-shaped jacket and at their lower ends to the ring of the chamber aforesaid, a fuel-magazine, feedpipes communicating with the fiat annular IOO chamber, and lead-pipes communicating with the cone-shaped water-jacket, substantially as Specified.

8. In a hot-waterheater, the combination of a casing, an annular water-chamber supported therein, a series of segmental chambered sections supported in circumferential rows one within the other u pon and communicating with the annular chamber, the outer row of sections being taller than the inner row, a water-chamber supported within the circle described by the said sections and attached to and communicating with said sections, a fuelmagazinesupported within the circle described by the inner wall of said last-mentioned chamber, feed-pipes to the rst-mentioned chamber, and outlet-pipes from the chamber surrounding the fuel-magazine.

9. In a hot-water heater, the combination of a casing, an annular water-chamber supported therein, aseries of segmental chambered sections supported in circumferential rows one within the other upon and communicating Y MATHEW RAPP.

Witnesses:

JOHN GETZ, Jr., JOSEPH HAUTE, Jr. 

